Threshing-machine.



No. 734,214, PATENTED JULY 21, 1903.

G. H. BIDWELL.

THRESHING MACHINE.

APPLICATION FILED MAY 3. 1902.

N0 MODEL.

UNITE STATES I atented July 21, 1903.

PATENT OFFICE.

THRESHlNG-MACHlNE.

SEECIFIGATION forming part of Letters Patent 0. 734,214, dated July 21, 1903.

Application filed May 3, 1902. Serial No. 105,773. (No model.) I

To all whom it may concern:

Be it known that I, CHARLES H. BIDWELL,a citizen ofthe United States, residing at Batavia,in the county of Genesee and State of New York, have invented an Improvement 'in Threshing-Machines, of which the following is a specification.

The object of my invention is to provide an improved means for the removal from the machine of the fine particles of dirt and small seeds that escape through the usual screen in the lower grain-pan of a threshing-machine,

such that such fine particles of dirt and small seeds shall be carried to one end of the machine and delivered there in a pile rather than having such fine particles of dirt and small seeds delivered to a barrel by the usual worm working in a trough. I have found that the use of a barrel for catching this refuse is objectionable, in that it takes up room and the barrels When'full have to be removed and replaced by empty ones.

The accompanying drawings, showing so much of a threshing-machine embodying my invention as is necessary to illustrate the same, are as follows:

Figure 1 is a longitudinal Vertical sectional View. Fig. 2 is a side View of the parts corresponding to Fig. 1. Fig. '3 is an enlarged sectional view through the centers of shafts s and 3 along dotted line a: y, as seen in Fig. 2.

Similar letters refer to similar parts through out the several views.

Referring to Fig. 1, b b are the framepieces of the machine, and S is the side of the same away from the observer. at and a are the ordinary grain-pans used in such machines, whileF is a fanning-mill having fanblades ffff, mounted on shafts, and also a spout or delivery-tube 1). mill shoe,having screen a chaff-board a and guide-boards a a", and a leading to spout or delivery-tube a all of usual construction. The grain-pan is modifiedin this case by inserting in it a short section of screen a as indicated, over, the hopper c 0, formed on and opening into the upper part of the horizontal pipe or tube 1). A worm w (seen in Figs. 1 and 3) is so supported and carried by shaft 8 that it nearly fills such tube 10 and operates to feed anything that may be delivered into such tube toward the observer, as seen a is the fanning? in Fig. 1, and into the fan F, as seen in Figs.

2 and 3. This fan F is supported from the side S of the machine and has arms or blades ff rigidly secured to sleeve 8, the bearing of which is formed by shaft .9 The fan F has a delivery-pipe 19 by which the refuse delivered to the fan is carried to any desired place.

Pulleys P and P are rigidly secured to the shaft 3 of the fan F, as seen in Figs. 2 and 3. These pulleys P and P drive by means of belts B and B, respectively, the pulleys P and P rigidly secured to shaft 3 and sleeve .9. The pulley P is larger than the pulley P and hence the fan-blades f f are rotated faster than the fan-bladesffff, while the pulley P is much smaller than the pulley P and hence the worm w is rotated much slower than the fan-blades ffff. The directions of motion of the several rotating parts are indicated by arrows.

The operation of my apparatus is as follows: The grain that has been thres'hed falls upon pans a and a and most of the dirt therein drops upon pan a, and as the grain is moved along on pan a by the shaking of such pan it passes over thescreen (1 contained therein, and since the mesh of such screen is too small to permit it to drop through the dirt only drops through such screen into hopper 0 and tube 1), from which it is removed by worm 20 into fan F, by means of which it is blown through pipe 13 to any desired place. The grain passes on from grain-pans a and or onto screen a of the shoe 0. and from thencev on in the usual course, as in thresh- I ing-machines in general.

What I claim is- 1. In a threshing-machine, in combination with a grain-pan having a screen therein and a trough and worm beneath such screen, a fan supported at one end of such trough and worm therein, such worm arranged to deliver the contents of such trough to such fan, and means for revolving such fan and delivering the contents emptied therein from such Worm to one end of the machine, such fan supported on a sleeve revoluble on the shaft for such worm, such sleeve also carrying a pulley by means of which such fan may be'driven.

2. In a threshing-machine, in combination with a grain-pan having a screen therein and a trough and worm therein beneath such the other whereby such fan may be revolved screen, a fan supported at one end of such at a speed different from that of such shaft trough and worm, such worm arranged to decarrying such Worm.

liver the contents of such trough to such fan, I I O. H. BIDWELL. means for concentrically supporting such fan Vitnesses: and the shaft for such worm, such fan and HAWLEY N. BID'WELL,

such shaft each revoluble independently of HERBERT T. BOOTH. 

